Suction device



FIG. 1 is a front view of a suction device, showing my new design;

FIG. 2 a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view of the suction device with a mounted top element;

FIG. 5 is a front view thereof; and,

FIG. 6 is a side view thereof.

The broken lines in the drawings are used to show portions of the suction device that form no part of the claimed design. 

CLAIM The ornamental design for a suction device, as shown and described. 